Event: League Division 2

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Opponent	Rating	Result
Angelica Rowe	1531	0 - 1
Paul Hardy	1543	0 - 1
Stephen Forbes	1492	0 - 1
Rupert W Jones	1808	0 - 1
Chris J Terrington	1570	1 - 0
Nigel Stansbie	0	1 - 0
Kenneth L Marsden	1391	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1219 = (9335 + 400 * (2 - 4)) / 7)